Tire for road-vehicles.



J. G. STIDDER.

TIRE FOR ROAD VEHICLES.

APPLICATION FILED JANHA; 19 11.

1,1 14,306, v Patented 00t.20,1914.

2 SHEETS-SHEET 1.

/N VEIV r01? J. G. STIDDER.. TIRE FOR ROAD VEHICLES. APPLIGATIONIILED JAN. 14, 19.11

Patented 0@n.20,1914.

2 SHEETS-SHEET 2.

Fly. 3.

UNITED sraa ps PATENT. OFFICE.

JAMES GEORGE S'IIIDDER. OF HARE-OW. ENGLAND.

TIRE'FOR BDAD-VEHICLES.

Specification. of Letters I-atent.

Patented Oct. 20, 191.4.

Application filed January 14, 1911. Seria": No. 602,621.

This inyention. relates 'to tires for road vehicles and has for its object to provide a tire of the solid rubbertype having a generally improved construction with increased resiliency and security of attachment'over the ordinary types.

.According to tlns'invention the base .of the solid rubber tire is formed with a groove of triangular or other suitable section or is suitably split or divided and in the groove or split is placed a ring of harder rubber or material of smaller dimensions than the groove and adapted to be floating therein between the tire and the rim until compression of the tire takes place. The arrangement is such that-while the groove imparts resiliency to the tire, when the weight is on the tire .the floating ringacts as a wedge adapted to exert lateral pressure on the divided parts of the tire and so press the same against the sides of the rim, thereby firmly securing the tire in position this action being rendered more effective by providing beads on the lower edges of the tire and corresponding recesses or grooves in the rim or side plates. In an equivalent manner the section of the tire may be splayed'out at the base nto a rim or side plates of correspondingly splayed or broadened form.

The accompanying drawings illustrate two constructions made in accordance with this invention. i

Figures 1 and 2 are part side view and cross section respectively of one construction. Fig. 3 is a cross section showing a modified construction. Fig. 3 is a detail sectional view taken on the plane extending through a stay tube 0 and bolt 0. Fig. l is a cross section showing with the detail view Fig. 5 a method of placing the improved tire on the wheel rim. Figs. 6 and 7 represent modified forms of the ring.

In Figs. 1 and '2 the outer part a of the rubber tire is of usual section with alarge semi-circular bead 7) running along the lower part at each side. 'The base of the tire is recessed with a large triangular hard rubber and canvas the said ring being ot'such dimensions and circumference as to lie with a space between it and the periphery of the rim 7 except that part which is subject to the weight of the vehicle. In this way. the resiliency of the tire due both to the rubber material of the tire and to the groove is allowed to have free play before the triangular ring (Z comes into contact with the rim 7 and exerts the wedging action which causes the divided part of the tire to be firmly gripped by the rim or side plates 9 g while the resiliency is well maintained. If required the resiliency of the tire may be increased by providing a number of grooved pockets or cavities such as h it formed in the substance of the tire and suitably spaced apart around the circumference of the groove. These pockets h It may if required, open onto the surface of the ring as shown so as to'be closed thereby when the weight is on the tire whereby the imprisoned air will impart increased resiliency. Although two torms'of pockets are illustrated one form may be chosen and they maybe of other shapes if required.

Fig. 3 showsa modification adapted for usein heavy vehicles where the side strains and other stresses on thetire are heavy. In this construction a series of transverse stay tubes 0 of suitable cross section such as that shown in Fig. 3 are provided, in these tubes 0 through bolts 0 are placed adapted to clamp theside plates g 9 together near their peripheral edge. The-said side plates will preferably be provided with lugs or sockets such as 0 for receiving bolts .lhe'internal wedging ring (Z may be suitably flattened as shown, throughout its length, or flattened or reduced parts may be provided only where the cross stay tubes are disposed. The side plates 9 9 may have their inner edgesfianged over into grooves in the telly asshown at b b for strength of construction. Figs. 2, 3 and 4 and parts 6 may be slightly turned outward at the edge as shown in dotted lines. to allow of the side plates being readily detached by placing a suitable tool thereunder. If required for further security against displacement by lateral strains the side plates may be provided with ears or projections m m Fig. 2 of slightly hooked or inclined form adapted to engage with corresponding recesses or pockets in the sides of the tire. Further to prevent jumping or creeping the recesses in which the beads on the tires fit may be provided with projections such as n n suitably spaced apart.

In order to prevent creeping of the tire I may provide the same with socket and pin devices such as shown in Figs: 1 and 2 Where 9' is a socket embedded in the tire preferably WVhGIl the same is being made. Into the recess 9' fits a pin or lug 8 formed upon the side plate. The socket is made largerthan the pin in a radial direction but a close lit in a circumferential direction where by the socket is allowed ample but limited movement in regard to the pin under the re silient movements of the tire but circumferential movement is prevented, this arrangement prevents both creeping and jumping Without interfering With the resiliency Further, to facilitate the placing of the tire in position with or Without the registering pin mentioned "I may slip the same-on to a circular plate formed with overlapping ends so as to he expansible as shown in Fig. 5. This plate keeps the tire thereon in circular shape and the plate with the tire thereon is slipped sidewise on to the rim of the wheel and may be allowed to remain as shown in F at and it may come away with the tire nuance when removed. This permits of the tire being forced tightly on to the rim.

What I claim as my invention and desire to secure by Letters Patent is For road vehicles a tire of solid rubber or equivalent material having its base broadened out and formed with a groove of suitable section so as to be dividedat the base, in combination with a edging ring of smaller sectional area than the said groove and adapted to be floating or free therein between the tire and the rim until compression of the tire takes place, side plates on the telly having grooves orrecesses formed therein. for receiving the broadened out and divided parts of the tire base, and correspending projections and lined recesses such as y and 8 formed in thetire and side plates for preventing jumpin or creeping.

In Witness whereor, I have hereunto signed my name in the presence of two subscribing Witnesses.

JAMES GEORGE STIDDER.

Witnesses HENRY ALLEIi Paving, Ronnn'r MIL'roN Srnanronvr. 

